import type { OpenAIErrorResponse, ErrorResponse, StatusResponse, JsonObject } from './types.js';
export type ManagementErrorResponse = ErrorResponse;
export type ApiErrorPayload = OpenAIErrorResponse | ManagementErrorResponse | StatusResponse | JsonObject | {
    error: string;
};
export declare class APIError extends Error {
    readonly status: number;
    readonly payload?: ApiErrorPayload;
    constructor(message: string, status: number, payload?: ApiErrorPayload);
}
export declare function isOpenAIError(payload: unknown): payload is OpenAIErrorResponse;
export declare function isStatusError(payload: unknown): payload is StatusResponse;
export declare function isManagementError(payload: unknown): payload is ManagementErrorResponse;